Audi 90 stalls in park or neutral

[imported_jimmy154]

My Audi 90 (1994) 2.8 liter automatic, stalls in park or neutral. Seems to idle well when not in those two. If I start it it idles in park for about min and then turns off. If I drive somewhere, anywhere, it shuts off a second after I put it in park or neutral.

I read about stall problems here and other places on the net and I have a few ideas about what it might be (ie idle control, fuel injectors, others that I forgot), but no ones problem or symptoms is/are exactly the same as mine. So I'm here begging for help /ubbthreads/images/graemlins/frown.gif Look at that face.

 

[audi5e]

the auto box selector has a switch that will stop the car from starting when in anything other than park or neutral. I wonder if that switch is somehow faulty and acting in reverse to what it should??

other causes could be temp sensor, vacuum leaks, immobiliser/alarm

is the car displaying any other symptoms? rough idle, temp high or low, etc?

 

[imported_jimmy154]

Car is fine otherwise. Small oil leak, that's it. I don't think the idle is rough at all. The temperature senser seems to be displaying a normal operating temperature. I will keep looking at the temp sensor though. I'm not 100% sure about this one. It does seems to happen only when the car is warm.

How does the immobiliser/alarm get triggered in this case to stop the car running? I'm very curious about this.

You don't think it could be the idle control?

 

[imported_jimmy154]

If you start it in park or neutral. It has a trendency to run for about a minute or two and then stall. I think this might be the case even when the car is started warm or cold. Maybe it only stalls when warm though. I will experiment and then post findings. I will see where the ECU is and see if i can clean the wire connectionings going to the ECU (if there are some) because I do suspect it's electrical, for some reason (I got a feeling).

I cleaned the ISV, although I'm not sure I did it right. And it did not help. Also I had a hole in a vacume tube that I replaced and that also did not help.

 

[audi5e]

Sweden? no idea? why are you off to Sweden soon?